SM9 - ProfeSSional analog Monitoring SySteM
User Manual
7
Back panel (pics. B, C, D, E):
HI-PASS FILTER: This potentiometer corresponds to the high-pass filter. It permits to limit or not the frequency response in the bass
frequencies of the SM9 monitors. The “FULL RANGE” position has the effect of disabling the high-pass filter (the monitor functions
on the whole bandwidth from 30Hz to 40kHz in three-way mode / 90Hz – 20kHz in two-way mode). The filtering slope for the three
other positions (45Hz-60Hz-90Hz) is 12dB/octave.
LF SHELVING: This potentiometer permits a linear adjustment of the frequency levels between 30Hz and 250Hz of +/-3dB per
step of 0.5dB.
LF EQ: This potentiometer permits to adjust the bass level. The central frequency is 50Hz and the Q factor is 2. Corrections are
made on a +/-3dB slot per step of 0.5dB.
LMF EQ: This potentiometer permits to adjust the level of the midbass frequencies. The central frequency is 160Hz and the Q factor
is 1. Corrections are made on a +/-3dB slot per step of 0.5dB. This correction is very useful if the SM9 monitor is installed on a
mixing desk. The activation of this setting will have the effect to lower the reflection produced by the mixing desk.
MF EQ: This potentiometer permits to adjust the level of the midrange frequencies. The central frequency is 1kHz and the Q factor
is 0.6. Corrections are made on a +/-3dB slot per step of 0.5dB.
HF SHELVING: This potentiometer permits a linear adjustment of the frequency levels between 4.5kHz and 40kHz of +/- 3dB per
step of 0.5dB.
XLR plug: This plug is dedicated to receive the low-level audio signal from the mixing desk, the sound card or any other material
providing a low-level signal, line type. You may have to adjust the input sensitivity of the monitor according to the connected source
(symmetrical or asymmetrical output source).
INPUT SENSITIVITY: This switch permits to adapt the input sensitivity of the monitor according to the source (mixing desk, sound
card, …) If the connected source transmits the audio signal via an unbalanced output, you will have to set the input sensitivity of the
monitor on -10dBV. If the audio signal is transmitted via a balanced output, you will have to set the input sensitivity of the monitor
on +4dBu.
Front panel:
LED colors (front and side) States Solution
Red, then orange, then green Switching mode normal functioning
Green then orange, then red Standby mode normal functioning
Red Active standby normal functioning
Green The monitor is working normal functioning
Orange Starting mode normal functioning
Flashing red
(one second interval) Clipping activation
Reduce the sound level until the LEDs
become green
Flashing red to full red
(functioning) Clipping activation
Reduce the sound level until the LEDs
become green
Orange (functioning) * Limiter activation
Reduce the sound level until the LEDs
become green
Flashing orange (one second interval) Faulty power supply (filtering stage) Contact your dealer or distributor
Orange/flashing red Faulty power supply (amplifier) Contact your dealer or distributor
* In order to benefit from the whole dynamic range of the SM9 monitor, the response time of the limiter is relatively long. This
function ensures the thermal protection of the speakers. The activation of the limiter leads to an automatic drop in the sound level.